1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Architecture specific compatibility types
7 #include <linux/thread_info.h>
8 #include <linux/types.h>
10 #include <asm/ptrace.h>
12 #include <asm-generic/compat.h>
14 #define COMPAT_USER_HZ 100
15 #define COMPAT_UTS_MACHINE "mips\0\0\0"
17 typedef s32 __compat_uid_t;
18 typedef s32 __compat_gid_t;
19 typedef __compat_uid_t __compat_uid32_t;
20 typedef __compat_gid_t __compat_gid32_t;
21 typedef u32 compat_mode_t;
22 typedef u32 compat_dev_t;
23 typedef u32 compat_nlink_t;
24 typedef s32 compat_ipc_pid_t;
25 typedef s32 compat_caddr_t;
34 compat_mode_t st_mode;
35 compat_nlink_t st_nlink;
36 __compat_uid_t st_uid;
37 __compat_gid_t st_gid;
42 old_time32_t st_atime;
44 old_time32_t st_mtime;
46 old_time32_t st_ctime;
67 struct compat_flock64 {
70 compat_loff_t l_start;
75 struct compat_statfs {
90 #define COMPAT_RLIM_INFINITY 0x7fffffffUL
92 typedef u32 compat_old_sigset_t; /* at least 32 bits */
94 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
95 #define _COMPAT_NSIG_BPW 32
97 typedef u32 compat_sigset_word;
99 #define COMPAT_OFF_T_MAX 0x7fffffff
101 static inline void __user *arch_compat_alloc_user_space(long len)
103 struct pt_regs *regs = (struct pt_regs *)
104 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
106 return (void __user *) (regs->regs[29] - len);
109 struct compat_ipc64_perm {
111 __compat_uid32_t uid;
112 __compat_gid32_t gid;
113 __compat_uid32_t cuid;
114 __compat_gid32_t cgid;
117 unsigned short __pad2;
118 compat_ulong_t __unused1;
119 compat_ulong_t __unused2;
122 struct compat_semid64_ds {
123 struct compat_ipc64_perm sem_perm;
124 compat_ulong_t sem_otime;
125 compat_ulong_t sem_ctime;
126 compat_ulong_t sem_nsems;
127 compat_ulong_t sem_otime_high;
128 compat_ulong_t sem_ctime_high;
131 struct compat_msqid64_ds {
132 struct compat_ipc64_perm msg_perm;
133 #ifndef CONFIG_CPU_LITTLE_ENDIAN
134 compat_ulong_t msg_stime_high;
136 compat_ulong_t msg_stime;
137 #ifdef CONFIG_CPU_LITTLE_ENDIAN
138 compat_ulong_t msg_stime_high;
140 #ifndef CONFIG_CPU_LITTLE_ENDIAN
141 compat_ulong_t msg_rtime_high;
143 compat_ulong_t msg_rtime;
144 #ifdef CONFIG_CPU_LITTLE_ENDIAN
145 compat_ulong_t msg_rtime_high;
147 #ifndef CONFIG_CPU_LITTLE_ENDIAN
148 compat_ulong_t msg_ctime_high;
150 compat_ulong_t msg_ctime;
151 #ifdef CONFIG_CPU_LITTLE_ENDIAN
152 compat_ulong_t msg_ctime_high;
154 compat_ulong_t msg_cbytes;
155 compat_ulong_t msg_qnum;
156 compat_ulong_t msg_qbytes;
157 compat_pid_t msg_lspid;
158 compat_pid_t msg_lrpid;
159 compat_ulong_t __unused4;
160 compat_ulong_t __unused5;
163 struct compat_shmid64_ds {
164 struct compat_ipc64_perm shm_perm;
165 compat_size_t shm_segsz;
166 compat_ulong_t shm_atime;
167 compat_ulong_t shm_dtime;
168 compat_ulong_t shm_ctime;
169 compat_pid_t shm_cpid;
170 compat_pid_t shm_lpid;
171 compat_ulong_t shm_nattch;
172 compat_ushort_t shm_atime_high;
173 compat_ushort_t shm_dtime_high;
174 compat_ushort_t shm_ctime_high;
175 compat_ushort_t __unused2;
178 /* MIPS has unusual order of fields in stack_t */
179 typedef struct compat_sigaltstack {
181 compat_size_t ss_size;
184 #define compat_sigaltstack compat_sigaltstack
186 static inline int is_compat_task(void)
188 return test_thread_flag(TIF_32BIT_ADDR);
191 #endif /* _ASM_COMPAT_H */